The Gear,spur, cataloged under National Stock Number 3020-00-734-6748, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Perfection Clutch. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3020-00-734-6748 |
| Primary Part Number | T406-31A |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Perfection Clutch |
| Status | CANCELLED |
| Bore Nominal Diameter | 2.771 INCHES BOTH ENDS IN |
| Teeth Quantity | 25 |
| Surface Treatment Document and Classification | MIL-C-16232 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Hardness Rating | 59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 1024 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.5714 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 19 BOTH ENDS |
| Nominal Outside Diameter | 3.731 INCHES IN |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 2.7143 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.562 INCHES IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| T406-31A | Perfection Clutch (USA) |
| 1001Z772 | Morris Material Handling, Inc. (USA) |
| 7346748 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 62-466-14 | Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA) |
| Reference | Meaning |
|---|---|
| 3020007346748 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 62-466-14 | 3/2 Design control — primary reference U.S. Government activity |
| 801E741 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
| 100069R1 | 3/2 Design control — primary reference U.S. Government activity |
| 2345424 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 2345424 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 316677 | 5/9 Secondary reference Daf Trucks N.v. |
NSN 3020-00-734-6748 is a Gear,spur, manufactured by Perfection Clutch, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: cancelled.
NSN 3020-00-734-6748 has 4 manufacturer part numbers on file: T406-31A (Perfection Clutch), 1001Z772 (Morris Material Handling, Inc.), 7346748 (U S Army Tank Automotive Command Amsta-Im-Mm), 62-466-14 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-499-4127. Verify interchangeability with system specifications before substitution.
Key specifications for T406-31A: Bore Nominal Diameter: 2.771 INCHES BOTH ENDS IN; Teeth Quantity: 25; Surface Treatment Document and Classification: MIL-C-16232 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, SOLID. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 3020-00-734-6748 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.